Closure to discussion of “Procedure for assessing the liquefaction vulnerability of tailings dams” by Ledesma, O, Sfriso, A, and Manzanal, D

Ledesma, Osvaldo; Sfriso, A. O.; Manzanal, Diego

doi:10.1016/j.compgeo.2022.105063

Cited by 2 publications

(1 citation statement)

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“…formulas, failure criterion, software), the main required parameters are the deformation properties of rock mass such as Young's modulus, Poisson's ratio, cohesion, and internal friction angle [20]. For instance, in computational geomechanics, these parameters are generally computed by the strength-reduction technique by reducing the shear strength parameters monotonically until convergence of the boundary-value problem is no longer achieved [21].…”

Section: Safety Factormentioning

confidence: 99%

Wpływ ograniczenia naprężenia na stabilność masy skalnej

Georgieva,

Paneiro,

Ajdanlijsky

et al. 2024

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A huge number of factors controls rock mass failure, but it is mainly influenced by the state of stress and in particular on the bearing capacity and failure mechanism of the massif. The evaluation of rock mass strength in confined and unconfined compression, as well as its tension strength, are key issues to understand rock mass behaviour prior to failure. A connection between the laboratory analyses of the rock mass and the practical use of the obtained data is presented in the current work. The strength properties, confinement effect and failure mechanisms are successfully studied in volcanic rock specimens from an underground mine. In order to estimate the confinement effect on rock mass strength properties, different confined compression stresses on rock specimens are applied. In addition, the crack initiation and propagation in rock samples are observed and rock mass failure mechanisms are studied. The obtained data is used for stability analyses of an underground openings through determination of the safety factor. The obtained results of the safety factors underlined the influence of the confining stress on the rock mass. The tendency of increasing values of the shear safety factor and decreasing values of the tensile safety factor as confinement increases is found. This is an important observation that would allowed more accurate predictions of the stable and unstable zones of the underground openings to be carried out, and thus the stability of the rock mass to be improved.

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Section: Safety Factormentioning

confidence: 99%